‘Star With 3 Super-Earth Exoplanets Just 21 Light Years Away’


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Astronomers said Thursday they had found a planetary system with three super-Earths orbiting a bright, dwarf star one of them likely a volcanic world of molten rock.
The four-planet system had been hiding out in the M-shaped, northern hemisphere constellation Cassiopeia, “just” 21 light years from Earth, a team reported in the journal Astronomy & Astrophysics.

It comprises four planets one giant and three super-Earths orbiting a star dubbed HD219134.

Super-Earths have a mass higher than Earth’s but are lighter than gas giants like Neptune, Saturn or Jupiter. They can be made of gas, rock, or both.

The planet with the shortest orbit, HD219134b, zips around every three days, and has now been observed transiting across the face of its star as seen from the vantage point of Earth.

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Measurements from the ground and with Nasa’s Spitzer space telescope showed its mass was 4.5 times higher than Earth’s, and that it was 1.6 times larger.

“Its mean density is close to the density of Earth, suggesting a possibly similar composition as well,” said a press statement from the University of Geneva, whose astronomers took part in the research.

“It’s very close to the star. The temperature is about 700 degrees” Kelvin (427 Celsius, 800 Fahrenheit), study co-author Stephane Udry told AFP.

“Probably the surface is melting… kind of a melted lava world with volcanoes… not good for life.”

It was not in the so-called “habitable zone” of its star, and would not have liquid water necessary for life.

But HD219134b is exciting for another reason: it is the closest transiting planet known to scientists, and thus offers a rare opportunity for further study of its composition and atmosphere against the backdrop of its star.

“These transiting systems are especially interesting in that they allow characterisation of the atmosphere of the planet (by studying) the light of the star going through the atmosphere,” Udry said.

And the system is relatively near at a distance of 21 light years from Earth. By comparison, the closest star to our Sun is three light years away, and the second six light years.

Among HD219134b’s fellow planets, the second furthest from the star weighs 2.7 times as much as Earth and orbits in 6.8 days, the next is 8.7 times more massive than Earth with a 47-day orbit.

A giant planet further out orbits once every three years, the team said.

Source : NDTV

Dwarf planet Ceres reveals pyramid-shaped mystery


Image of Pyramid taken by NASA’s Spacecraft DAWN. Do you think it is just a simple mountain or Something else.
OK, this is just too much.

First, NASA’s Dawn probe spotted curiously sparkly bright spots on the surface of Ceres, the dwarf planet that lies in the asteroid belt between Mars and Jupiter.
Beats us, the scientists said.

Now, cameras on the tractor-trailer-size spacecraft have captured a baffling structure rising 3 miles above the planet’s cratered surface.

Conveniently, the thing looks an awful lot like a pyramid.”Intriguing,” the NASA scientists said.

 Another Image of Ceres showing Strange mysterious lights. Image taken by NASA’s DAWN spacecraft.
To be fair, the agency offered no suggestion that the towering structure is an offering to some long-lost space emperor or home to our new alien overlords.
And, to be even more fair, it’s probably just a really tall mountain in a solar system filled with wondrous and strange natural phenomena.

But the Dawn mission has done nothing but stoke imaginations since the discovery of mysterious bright spots on the surface of the dwarf planet in February and the beginning of the probe’s orbit in March.

Folks have claimed to have spotted giant alien motherships hovering over the planet, bat-winged spaceships parked on its surface and even evidence of alien cities.

But the mystery only deepened with the most recent batch of images showing even more bright spots alongside the largest one, which NASA said looks to stretch some 6 miles.

Many, of course, insist that the spots look for all the world like brightly lit cities twinkling on the shadowed surface of the distant dwarf planet.

I knew it! There’s gambling going on on Ceres! #aliens pic.twitter.com/QP6PB6JFho

 
— Chris Reher (@Chris_Reher) June 13, 2015
Of course, NASA hasn’t traveled down that road. Scientists, they say, still don’t know what the spots are. Maybe ice. Maybe salt.
“But scientists are considering other options, too,” NASA said coyly.
But #itsaliens, right?
Source : FirstPost
NOTE :  Now, if you spent more time on Blogger then you can Check out my new  BLOGGER Blog. 
 
 

New Horizons’ Pluto Approach Hyped in Epic Video


Dark Matter Space Blogger
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Artistic Depiction of Pluto 

The National Space Society put together an incredible video preview of the history-making moment. It has the vibe of a movie trailer, complete with epic narration and stunning visuals, and it perfectly captures why space enthusiasts are so psyched about the New Horizons mission.

The video sweeps you through a timeline of the last half century of space exploration using beautiful images of each planet we’ve explored, starting with Venus in 1962 and ending with Neptune in 1989.

New Horizons will reach Pluto and its moons on July 14, and they will be “the farthest worlds ever to be explored by humankind,” the video says.

So far that the sun appears as a faint dot.

Pluto-sun

Here is the Video,

Source : businessinsider

Hubble Space Telescope turns 25 and Here are some of the Most Amazing Pictures Taken by it


Hubble Space Telescope marks 25th anniversary in orbit this week. So, There are some  best images taken by Hubble Space Telescope during its 25 years journey. These Images are 100% real and contains no CGI

Hubble has traveled 3.4 billion miles, circling Earth nearly 137,000 times and making more than 1.2 million observations of more than 38,000 celestial objects, according to the Space Telescope Science Institute in Baltimore. The most distant objects spotted by Hubble — primitive galaxies — are some 13 billion light-years away and date to within 400 million or so years of the universe’s origin, known as the Big Bang.

Hubble provides an average of 829 gigabytes of archival data every month, according to the institute. Altogether, Hubble has produced more than 100 terabytes of data.

Some of the images have description about it. if anyone wants to read image description just click that image. and  Enjoy……

Image Credit : hubblesite.org

Source:Fox news

Newly Discovered Exoplanet Is The Most Distant Ever Detected


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This artist’s conception shows the newly discovered alien planet also Known as OGLE-2014-BLG-0124Lb , which is about 13,000 light-years from Earth.

Astronomers have found an exoplanet nearly 13,000 light-years away, making it one of the most distant planets known to man. This discovery is important not because of the planet itself, a gas giant about half the size of Jupiter, but because what it means for the future of planetary discovery and mapping.

“For context, most of the planets we do know about are a factor of 10-100 times closer than OGLE-2014-BLG-0124,” Dr. Jennifer Yee, a NASA Sagan Fellow at the Harvard-Smithsonian Center for Astrophysics in Cambridge

Far, far away.

The microlensing technique has helped astronomers discover about 30 distant alien planets in our Milky Way’s bulge, the galaxy’s central area of mostly old stars, gas, and dust.

The farthest known exoplanet resides some 25,000 light years away in the bulge of our galaxy, Yee said in the email. The bulge is a very different environment from the Milky Way’s disk, where our own solar system is located.

According to Yee, no exoplanets have been found outside of our galaxy, which spans about 100,000 light years.

Like early explorers mapping the continents of our globe, astronomers are busy charting the spiral structure of our galaxy, the Milky Way. Using infrared images from NASA's Spitzer Space Telescope, scientists have discovered that the Milky Way's elegant s

This artist’s map of the Milky Way shows the location of some of the farthest known exoplanets, including OGLE-2014-BLG-0124Lb.

Comparing planets to planets. Astronomers hope not only to gain a better understanding of the distribution of planets in the Milky Way, but also to gather enough detail about distant planets to compare them with those closer to Earth. More than 1,000 exoplanets closer to home have been discovered by the planet-hunting Kepler mission and ground-based observatories, Space.com reported.

“We would really like to know whether planets form in the central bulge of our galaxy the same way that they do here, near the sun, where the overwhelming majority of planets have been found,” Dr. Andrew Gould, professor of math and physical sciences at Ohio State University, and a co-author of the paper describing the newfound exoplanet, told The Huffington Post.

The Christian Science Monitor reported that the Spitzer telescope is scheduled to observe about 120 more “microlensing” events this summer, which could lead to the discovery of even more distant exoplanets.

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This infographic explains how NASA’s Spitzer Space Telescope can be used in tandem with a ground-based telescope to measure the distances to planets using the “microlensing” technique.

Source: huffingtonpost

Signs of Alien Life Will Be Found by 2025, NASA’s Chief Scientist Predicts


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Here’s the full quote, as delivered by NASA Chief scientist Ellen Stofan at Tuesday’s panel discussion on the Agency’s search for habitable worlds and alien life:

“I think we’re going to have strong indications of life beyond Earth within a decade, and I think we’re going to have definitive evidence within 20 to 30 years.

We know where to look. We know how to look,” Stofan added. “In most cases we have the technology, and we’re on a path to implementing it. And so I think we’re definitely on the road.”

Former astronaut John Grunsfeld, associate administrator for NASA’s Science Mission Directorate, echoed Stofan’s assessment. “I think we’re one generation away in our solar system, whether it’s on an icy moon or on Mars, and one generation [away] on a planet around a nearby star.”

Maybe it’s time to start placing bets. Personally, my money’s on Europa – but each of the following “ocean worlds” listed in this infographic from NASA a solid candidate:

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Source :io9

The icy eyes of Mars


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One thing all solid bodies in the Solar System share in common is craters. Some worlds, like Mercury or the Moon, are covered in them, having no atmosphere to erode them away. Earth has relatively few; our dynamic atmosphere and water circulation wipes them out after a few millennia. And some icy bodies like Saturn’s moon Enceladus or Jupiter’s Europa only have a few because their surfaces are also constantly changing… on a geologic timescale.

Source : Sen Blog

Mars has gas, and Curiosity finds organic matter — fuzzy signs of life?


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(Click Image to Download)

It could be a sign, a vague one.

A NASA rover has found the building blocks of life on Mars. They might be the product of past or present life on the Red Planet — or they might not be.

Either way, the samples of organic matter in the atmosphere and in rock show that Mars may at least have once had conditions favorable to hosting life, NASA said in a statement. They also show that the planet is still chemically active.

The Curiosity rover’s tapping into organics in rock is the first find ever of life’s building blocks on Mars’ surface.

Gas blast

The rover has run into pockets of gas on Mars: methane, often used to fire up gas stoves back on Earth.

Organic matter is made up of carbon bonded with other elements, often hydrogen and oxygen. Living things are made up of it, but life is not necessary for it to exist.

Methane is the smallest organic compound, consisting of one carbon and four hydrogen atoms.

On our planet, methane is a fossil fuel, but it can also rise out of rotting sewage or fly through the air in flatulence.

In other words, it usually comes from something living, or something that was once alive.

No life found

That could be the case on Mars, too, NASA said in a statement this week.

But the space agency carefully points out that methane can also come from inanimate sources as well.

“There are many possible sources, biological or non-biological, such as interaction of water and rock,” said Sushil Atreya, a scientist on the Curiosity team.

At this point, NASA doesn’t know if microbes are behind the gas or just minerals.

Researchers used Curiosity’s instruments a dozen times to get a breath of methane, and four of those times, it peaked at a level 10 times higher than usual.

They believe it may have been puffed up from the ground like little burps.

Organic rock

Curiosity also found organic matter while drilling into stone.

“This first confirmation of organic carbon in a rock on Mars holds much promise,” said scientist Roger Summons, who works on the rover team.

Source : CNN

5 Most Mysterious Objects in the Solar System


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(Click Image to Download)

What unsolved mysteries lurk out in the thick blackness of space? Presenting 5 mysterious celestial objects in our Solar System, including Comet ISON, the Black Knight Satellite, 1991 VG, Object X and Planet X / Nibiru.

Source : Dark5

Stephen Hawking: Artificial Intelligence could spell end of human race


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World-famous physicist Stephen Hawking told the BBC he believes future developments in artificial intelligence (AI) have the potential to eradicate mankind.

The Cambridge professor, who relies on a form of artificial intelligence to communicate, said if technology could match human capabilities “it would take off on its own, and re-design itself at an ever increasing rate.”

He also said that due to biological limitations, there would be no way humans could match the speed of development of technology.

“Humans, who are limited by slow biological evolution, couldn’t compete and would be superseded,” he said.

“The development of full artificial intelligence could spell the end of the human race.”

Hawking suffers from amyotrophic lateral sclerosis (ALS), a form of motor neuron disease, and uses AI technology as part of a system which senses how he thinks and predicts which words he will use next.

His bleak forecast came in response to questions about updates to his AI communication systems.

His latest upgrade, developed by Intel Corporation over the past three years, will allow the professor to write up to 10 times faster and communicate more effectively with friends, family and students.

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“With the improvements made, I am now able to write much faster, and it means that I can continue to give lectures, write papers and books and, of course, speak with my family and friends more easily.”

“This new system is life changing for me, and I hope it will serve me well for the next 20 years,” he said.

Other technology specialists do not share Hawking’s grim outlook. Rollo Carpenter, creator of Cleverbot, said he believes mankind will maintain control over technology.

“I believe we will remain in charge of the technology for a decently long time and the potential of it to solve many of the world problems will be realized,” he said.

Carpenter’s software responds to stimulation from conversations with actual humans, and has the capability to learn from its previous interactions.

Cleverbot has scored highly in the ‘Turing test’, which is designed to examine how closely machines can replicate human behavior.

We cannot quite know what will happen if a machine exceeds our own intelligence, so we can’t know if we’ll be infinitely helped by it, or ignored by it and sidelined, or conceivably destroyed by it,” Carpenter added.

Technology and a rise in the capabilities of AI are already affecting workplaces nationwide, as many employers opt to invest in a machine, rather than hiring people.

In November, a study from the University of Oxford suggested that a third of UK jobs could be replaced by machines over the next two decades.

Low-paid jobs featuring repetitive tasks are most likely to be superseded by technology, with clerical and support service jobs most at risk.

The study further found that jobs with a salary under £30,000 are almost five times more likely to be replaced than jobs over £100,000.

Source : RT